I've done this more then I care to mention and I'm sure I'm not the only one. Leveling fishing is a productive way to spend your time whilst waiting for a Battleground. You just have to remember to re-equip you weapon of badassary or you'll spend the entire time waking people with a fishing pole, wondering why your dps sucks...

...Unless your rocking the Kalu'ak fishing pole. Thats a whole different story...